Question

Simplify :
2xy (x – 4) + 5y and find its value for x=1/4, y=-1/2 please tell ..
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Answer 1

Answer:

Step-by-step explanation:

Simplify :

2xy(x−4)+5y

=(2xy)(x)+(2xy)(−4)+5y

=2x2y+−8xy+5y  

=2x2y−8xy+5y

Evaluate :

2(  1 /4 ) (  −1  / 2  ) (  1 / 4 - 4 )  +5 ( −1  / 2  )

= 2(  1 /4 ) (  −1  / 2  ) (  1 / 4 - 4 )  +5 ( −1  / 2  )

=  −25  / 16

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Hope it helps

Answer 2

Step-by-step explanation:

$Answer</p><p></p><p>Open in answr app</p><p></p><p>According to question,</p><p></p><p></p><p>$

$2x2−3y+3x2+5x2+5x−7−7x+2y$

$=10x2−2x−y−7$

$At x=−1 and y=2,$

$10(−1)2−2(−1)−2−7$

$=  10+2−2−7$

$=3</p><p></p><p></p><p>$